JP6131236B2 - Vehicle door - Google Patents

Description

  The present invention relates to a vehicle door.

  As a structure for enhancing the rigidity of a door beam of a vehicle door, Patent Document 1 collects two intermediate groove forming portions provided at the door width direction center portion of the door beam and two intermediate groove portions at the door width direction end portion. A structure including a rear groove forming portion is described.

Japanese Patent No. 4316561

  In the structure described in Patent Document 1, since the rigidity of the rear groove forming portion is small with respect to the two intermediate groove forming portions, the rigidity changes abruptly at these connecting portions. Therefore, when the vehicle door is strongly closed, the door beam may bend and vibrate starting from the connection portion.

  This invention is made | formed in view of the said point, and makes it a subject to provide the vehicle door which can prevent the vibration of a door beam.

In order to solve the above-described problems, a vehicle door according to the present invention includes a door main body and a door beam provided across both end portions in the door width direction of the door main body, and the door beam has a door width of the door beam. A first bead portion that is provided on the center side in the direction and extends in the longitudinal direction of the door beam, and a second bead portion that is provided on the end side in the door width direction of the first bead portion and extends in the longitudinal direction of the door beam. And a first ridge line extending from a connecting portion between the first bead portion and the second bead portion to one side in a short direction of the door beam , the first bead portion including a first flange, the first bead A first convex portion connected to one flange and projecting from the first flange in the door thickness direction; and an additional convex portion projecting further from the first convex portion in the door thickness direction, and the additional convex portion, Towards the connection And the second bead portion is connected to the first flange; and the second bead portion is formed to have the same protruding height as the first convex portion in the connecting portion. A second convex portion connected to the first convex portion and projecting from the second flange in the door thickness direction, and the first ridge line includes the first convex portion and the additional convex portion in the door thickness direction. It is formed so that it may become convex in the same direction as a part and the 2nd convex part, and the projection height from the 1st flange of the additional convex part in the door thickness direction is the second convex part in the door thickness direction. The first bead portion is configured to be higher in rigidity than the second bead portion by being larger than the protruding height from the second flange, and the door body includes an outer panel that forms an outer surface, and the outer panel Car An inner panel provided on the inner side in the width direction, the inner panel including a mounting surface extending in the door width direction, and inner and outer surfaces extending in the door thickness direction continuously with the mounting surface, and the mounting surface and An auxiliary bracket provided along the inner and outer surfaces, wherein the auxiliary bracket includes a portion where the inner and outer surfaces are joined, and a portion where the second flange and the mounting surface are joined. To do.

According to such a configuration, since the first ridge line is connected to the connecting portion between the first bead portion and the second bead portion, the rigidity of the connecting portion is improved, and the rigidity at the connecting portion in the longitudinal direction of the door beam is rapidly increased. The change can be suppressed and the connection portion can be prevented from becoming the starting point of vibration.
Moreover, according to this structure, since an additional convex part becomes the same protrusion height as a 1st convex part in a connection part, a rapid aperture drawing is unnecessary and it can improve the moldability of a door beam.
Further, since the first bead portion has a two-stage shape, the bending rigidity of the door beam can be improved.
Moreover, according to this structure, since the door beam is joined to the inner panel not only in the door thickness direction but also in the door width direction by the auxiliary bracket, it is possible to prevent the door beam from peeling off from the inner panel.
Moreover, since the auxiliary bracket suppresses the vibration and deformation of the inner panel in the vicinity of the second flange, the vibration of the door beam can be more suitably prevented.
Moreover, since the door beam and the auxiliary bracket are separate members, the moldability can be improved.

  The door beam preferably includes a second ridge line extending from the connection portion to the other side in the short direction of the door beam, and the first ridge line and the second ridge line are preferably offset in a longitudinal direction of the door beam.

According to such a configuration, since the two ridge lines are connected to both sides of the connecting portion in the short direction of the door beam, the rigidity of the connecting portion is further improved, and a sudden change in the rigidity of the connecting portion in the longitudinal direction of the door beam is further improved. It can suppress suitably and can prevent more appropriately that the said connection part becomes a starting point of a vibration.
In addition, since the two ridge lines are offset, it is possible to prevent each ridge line from being a starting point of vibration.

  The second bead portion includes a pair of second flange portions on both sides of the second convex portion in the width direction of the door beam, and the auxiliary bracket is joined to only one of the pair of second flange portions. It is desirable that

  According to such a configuration, the auxiliary bracket is joined only to one of the second flanges, does not cross the second convex part, and does not exist on the other second flange side, so that the electrodeposition coating agent enters the second convex part. Does not obstruct the flow.

  The end of the auxiliary bracket is preferably bent toward the second convex portion with respect to the second flange in the second convex portion.

  According to such a configuration, since the end of the auxiliary bracket becomes a bent portion and is accommodated in the second convex portion, the bent portion can prevent the auxiliary bracket from being displaced in the lateral direction of the door beam. it can.

  According to the present invention, the vibration of the door beam can be prevented.

It is a fragmentary broken view which shows the door for vehicles which concerns on embodiment of this invention. It is an enlarged view which shows the door beam and reinforcing bracket of FIG. It is X1 arrow sectional drawing of FIG. It is X2 arrow sectional drawing of FIG. It is an expansion perspective view which shows the door beam and reinforcement bracket of FIG. It is X3 arrow sectional drawing of FIG.

  An embodiment of the present invention will be described in detail with reference to the drawings, taking as an example the case where the present invention is applied to a vehicle door provided on the left and right side surfaces of a vehicle. In the description, the same elements are denoted by the same reference numerals, and redundant description is omitted. Note that “front and rear” indicated by arrows in each figure indicates the vehicle longitudinal direction, “up and down” indicates the vehicle vertical direction, and “left and right” indicates the left and right direction (vehicle width direction) as viewed from the driver's seat. Show. The direction used when describing the vehicle door is based on the state in which the vehicle door is closed. Further, the door width direction is a direction connecting a pair of opposite sides of the door surface. In the present embodiment, the door width direction indicates a direction orthogonal to the vehicle vertical direction in a state where the vehicle door is closed. The door thickness direction is a direction orthogonal to the door surface. That is, in the state where the vehicle door is closed, the door width direction coincides with the vehicle front-rear direction, and the door thickness direction coincides with the left-right direction (vehicle width direction).

<Vehicle door>
As shown in FIG. 1, a vehicle door 1 according to an embodiment of the present invention is a door that opens and closes a door opening formed on left and right side surfaces (right side surface in the present embodiment) of a vehicle body.
The vehicle door 1 includes a door body 2, a door beam 30, a mounting bracket 40, and a reinforcing bracket 50.

<Door body>
The door body 2 is swingably supported by the vehicle body at its front end. The door body 2 includes an outer panel 10 and an inner panel 20.
The outer panel 10 is a substantially flat plate member made of metal, and is an outer surface member that constitutes the outer surface of the vehicle door 1.
The inner panel 20 is a metal substantially flat plate-like member, and is provided on the inner side of the outer panel 10 in the vehicle width direction.
As shown in FIG. 2, the inner panel 20 includes a mounting surface 21 and a circumferential inner and outer surface 22. These will be described in detail later.

<Door beam>
The door beam 30 is a metal member that is provided across both ends of the door body 2 in the door width direction and reinforces the door body 2.
In the present embodiment, the door beam 30 is formed by bending a long metal plate by pressing or the like, and is provided between the outer panel 10 and the inner panel 20 across the both ends of the inner panel 20 in the door width direction. Yes.
As shown in FIG. 2, the door beam 30 includes a first bead portion 31, a second bead portion 32, a first ridge line 33, and a second ridge line 34.

The first bead portion 31 is formed to extend in the longitudinal direction at the central portion in the longitudinal direction of the door beam 30.
As shown in FIG. 3, the first bead portion 31 further protrudes from a pair of upper and lower first flanges 31a and 31a, a first convex portion 31b connecting the first flanges 31a and 31a, and the first convex portion 31b. It is comprised by the additional convex parts 31c and 31c.
The first convex portion 31b is a portion having a substantially U-shaped cross-section projecting to one side in the vehicle width direction with respect to the first flanges 31a and 31a. In the present embodiment, the first convex portion 31b extends in the longitudinal direction of the door beam 30 and is a vehicle. Projects outward in the width direction.
The additional convex portions 31c and 31c are portions exhibiting a cross-sectional shape that protrudes further in the vehicle width direction with respect to the first convex portion 31b at both ends in the short direction of the door beam 30 of the first convex portion 31b. In this embodiment, the door beam 30 extends in the longitudinal direction and protrudes outward in the vehicle width direction.

  As shown in FIG. 4, as the first bead portion 31 approaches the second bead portion 32, the protruding height of the additional convex portions 31c and 31c decreases, and the additional convex portions 31c and 31c are the same as the first convex portion 31b. In the state where the protrusion height is reached, the connection portion A is connected to the second bead portion 32.

As shown in FIG. 2, the second bead portion 32 is continuously provided on the rear end side in the door width direction of the first bead portion 31 and extends in the longitudinal direction of the door beam. Is a bead with low rigidity.
The second bead portion 32 includes a pair of upper and lower second flanges 32a and 32a and a second convex portion 32b that connects the second flanges 32a and 32a, and has a hat shape in cross section.
The 2nd convex part 32b is a site | part which exhibits the cross-sectional U-shape which protrudes to one side of the vehicle width direction with respect to the 2nd flanges 32a and 32a. Projects outward in the direction.

The first ridge line 33 is a ridge line extending from the connection portion A between the first bead portion 31 and the second bead portion 32 to one side in the short direction of the door beam 30.
Specifically, the first ridge line 33 extends upward from the connection portion A between the first convex portion 31b and the second convex portion 32b, and is bent so as to protrude outward in the vehicle width direction. It is.

The second ridge line 34 is a ridge line extending from the connection portion A between the first bead portion 31 and the second bead portion 32 to the other in the short direction of the door beam 30.
Specifically, the second ridge line 34 extends downward from the connection portion A between the first convex portion 31b and the second convex portion 32b and is bent so as to protrude outward in the vehicle width direction. It is.

The first ridge line 33 is formed at a connection portion between the upper first flange 31a and the upper second flange 32a, and the second ridge line 34 is a connection portion between the lower flange 31a and the lower second flange 32a. Is formed.
Further, the first ridge line 33 and the second ridge line 34 are offset by a distance L in the longitudinal direction of the door beam 30.

Further, the door beam 30 includes a third ridge line 35 parallel to the first ridge line 33 and a fourth ridge line 36 parallel to the second ridge line 34 on the rear side in the door width direction of the door beam 30 relative to the ridge lines 33 and 34. .
Each of the ridge lines 35 and 36 is a ridge line bent so as to protrude toward the inner side in the vehicle width direction, and the third ridge line 35 and the fourth ridge line 36 are offset in the longitudinal direction of the door beam 30.
That is, the first ridge line 33 and the third ridge line 35 constitute a third bead portion, and the second ridge line 34 and the fourth ridge line constitute a fourth bead portion.

<Mounting bracket>
The mounting bracket 40 is a metal member formed with the front end portion of the door beam 30 as a separate body.
The rear end portion of the mounting bracket 40 is joined to the front end portion of the door beam 30 by welding or the like, and the front end portion of the mounting bracket 40 is joined to the inner panel 20 by welding or the like.

<Reinforcement bracket>
As shown in FIG. 5, the reinforcing bracket 50 is a metal member that reinforces the attachment site of the door beam 30 to the inner panel 20.
The reinforcing bracket 50 is an L-shaped member, and integrally includes a vertical side 51 extending in the vertical direction and a horizontal side 52 extending forward from the upper end of the vertical side 51.
The vertical side portion 51 has a shape that comes into contact with the mounting surface 21 extending in the door width direction of the inner panel 20, and the horizontal side portion 52 is continuous with the mounting surface 21 of the inner panel 20 and extends in the door thickness direction. The shape which abuts on is exhibited.

The vertical side portion 51 of the reinforcing member 50 has an attachment surface in a state where the attachment surface 21 of the inner panel 20 is arranged on the inner side in the vehicle width direction and the second flange 32a on the door beam 30 is arranged on the outer side in the vehicle width direction. 21 and the second flange 32a are joined by spot welding or the like.
Further, the lateral side portion 52 of the reinforcing member 50 is joined to the inner and outer surfaces 22 by spot welding or the like with the inner and outer surfaces 22 of the inner panel 20 provided on the rear side of the vehicle.

  As shown in FIG. 6, the lower end portion of the vertical side portion 51 of the reinforcing member 50 is a bent portion 51 a that is bent outward in the vehicle width direction, and is accommodated in the second convex portion 32 b of the door beam 30. It abuts and is joined to the second convex portion 32b by spot welding or the like.

  In the vehicle door 1 according to the embodiment of the present invention, since the first ridge line 33 is connected to the connection portion A between the first bead portion 31 and the second bead portion 32, the rigidity of the connection portion A is improved. An abrupt change in rigidity at the connection portion A in the longitudinal direction of the door beam 30 can be suppressed, and the connection portion A can be prevented from becoming a starting point of vibration.

Further, since the vehicle door 1 has ridge lines 33 and 34 connected to both sides in the short direction of the door beam 30 of the connection portion A, the rigidity of the connection portion A is further improved, and the connection portion A in the longitudinal direction of the door beam 30 is connected. It is possible to more preferably suppress a sudden change in rigidity at the point, and more preferably to prevent the connection portion A from becoming a starting point of vibration.
Moreover, since the ridgelines 33 and 34 are offset, the vehicle door 1 can prevent the ridgelines 33 and 34 from starting vibrations.

Moreover, since the additional convex part 32c becomes the same protrusion height as the 1st convex part 32b in the connection part A, the vehicle door 1 does not require a rapid aperture | throttle and can improve the moldability of the door beam 30. FIG.
Further, since the first bead portion 31 has a two-stage shape, the vehicle door 1 can improve the bending rigidity of the door beam 30.

Moreover, since the door beam 30 is joined to the inner panel 20 from the door width direction in addition to the door thickness direction by the auxiliary bracket 50, the vehicle door 1 can prevent the door beam 30 from being peeled off from the inner panel 20. it can.
Moreover, since the auxiliary bracket 50 suppresses the vibration and deformation of the inner panel 20 in the vicinity of the second flange 32, the vehicle door 1 can more suitably prevent the door beam 30 from vibrating.
Moreover, since the door beam 30 and the auxiliary | assistant bracket 50 are another members, the vehicle door 1 can improve a moldability.
Further, in the vehicle door 1, since the auxiliary bracket 50 is joined to the second flange 32 a on the first ridge line 33 side which is the longitudinal center side of the door beam 30, the joining area between the auxiliary bracket 50 and the second flange 32 a. Can be suitably secured.

  Further, in the vehicle door 1, the auxiliary bracket 50 is joined only to one second flange 32 a and is provided partway through the second convex portion 32 b, and does not completely cross the second convex portion 32 b, and the other Since it does not exist on the second flange 32a side, the flow of the electrodeposition coating agent into the second convex portion 32b is not hindered.

  Moreover, since the edge part of the auxiliary | assistant bracket 50 becomes the bending part 51a, and the door 1 for vehicles is accommodated in the 2nd convex part 32b, the auxiliary | assistant bracket 50 becomes short of the door beam 30 by this bending part 51a. It can prevent shifting in the hand direction.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, In the range which does not deviate from the summary of this invention, it can change suitably. For example, the number of additional convex portions 31c is not limited to two, and may be one or three or more. Further, the door beam 30 and the mounting bracket 40 may be an integrally molded product instead of separate members. Further, the order in which the reinforcing bracket 50 and the door beam 30 are overlapped with the inner panel 20 is not limited to the above, and for example, the inner panel 20, the door beam 30, and the reinforcing bracket 50 are overlapped in this order from the inner side in the vehicle width direction. It may be a configuration. Further, the structure of the door beam 30 of the present invention may be applied to both ends of the door beam 30. The vehicle door of the present invention can also be applied to a so-called back door that can open and close the rear opening of the vehicle with the upper end of the door as an axis. Further, the door beam of the present invention may have a configuration in which the door beam is provided across the end portion in the vehicle vertical direction, which is an example of the door width direction. Moreover, the lower end part of the reinforcement bracket 50 may be formed so that it may overlap with the upper second flange 32a. Moreover, the structure arrange | positioned so that the auxiliary | assistant bracket 50 may be joined with not the upper 2nd flange 32a but the lower 2nd flange 32a may be sufficient.

DESCRIPTION OF SYMBOLS 1 Vehicle door 2 Door main body 10 Outer panel 20 Inner panel 21 Mounting surface 22 Inner / outer surface 30 Door beam 31 First bead part 31a First flange 31b First convex part 31c Additional convex part 32 Second bead part 32a Second flange 32b Second Convex part 33 First ridge line 34 Second ridge line 50 Reinforcement bracket A Connection part

Claims (4)

The door body,
A door beam provided across the door width direction both ends of the door body,
With
The door beam is
A first bead portion provided on the door width direction center side of the door beam and extending in the longitudinal direction of the door beam;
A second bead portion continuously provided on the door width direction end side of the first bead portion and extending in the longitudinal direction of the door beam;
A first ridge line extending from a connecting portion between the first bead portion and the second bead portion to one side in a short direction of the door beam;
Equipped with a,
The first bead portion is
A first flange;
A first protrusion connected to the first flange and protruding from the first flange in the door thickness direction;
An additional protrusion protruding further in the door thickness direction from the first protrusion,
With
The additional convex part is formed so that the projecting height becomes lower toward the connecting part and becomes the same projecting height as the first convex part in the connecting part,
The second bead portion is
A second flange coupled to the first flange;
A second protrusion that is connected to the first protrusion and protrudes in the door thickness direction from the second flange;
With
The first ridge line is formed to be convex in the same direction as the first convex part, the additional convex part and the second convex part in the door thickness direction,
When the protrusion height of the additional protrusion in the door thickness direction from the first flange is larger than the protrusion height of the second protrusion in the door thickness direction from the second flange, the first bead portion is It is configured with higher rigidity than the two bead parts,
The door body includes an outer panel constituting an outer surface, and an inner panel provided on the inner side in the vehicle width direction of the outer panel,
The inner panel includes a mounting surface extending in the door width direction, and inner and outer surfaces extending in the door thickness direction continuously with the mounting surface,
An auxiliary bracket provided along the mounting surface and the inner and outer surfaces;
The auxiliary bracket includes a portion where the inner and outer surfaces are joined, and a portion where the second flange and the mounting surface are joined . The door beam includes a second ridge line extending from the connection portion to the other in the short direction of the door beam,
The second ridge line is formed to be convex in the same direction as the first ridge line in the door thickness direction,
The vehicle door according to claim 1, wherein the first ridge line and the second ridge line are offset in a longitudinal direction of the door beam. The second bead portion includes a pair of the second flange portions on both sides in the short direction of the door beam of the second convex portion,
The vehicle door according to claim 1 , wherein the auxiliary bracket is joined to only one of the pair of second flange portions. 4. The vehicle door according to claim 3 , wherein an end of the auxiliary bracket is bent toward the second convex portion with respect to the second flange in the second convex portion. 5.

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